CHAOTIC VOLTAGE OSCILLATIONS IN THE NEGATIVE-DIFFERENTIAL-RESISTANCE REGION OF THE I-U CURVES OF V2O5 CRYSTALS

被引：6

作者：

KARAKOTSOU, C

ANAGNOSTOPOULOS, AN

KAMBAS, K

SPYRIDELIS, J

机构：

[1] Physics Department, Solid State Physics Section 313-1, Aristoteles University of Thessaloniki

来源：

PHYSICAL REVIEW B | 1992年 / 46卷 / 24期

关键词：

D O I：

10.1103/PhysRevB.46.16144

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The I-U characteristics Of V2O5 single crystals show at high current densities an S-shaped negative-differential-resistance region. In this region chaotic voltage oscillations were registered. The maximum amplitude of them was in the range of 100 mV. An analysis with the Grassberger-Proccacia method led to the determination of the minimum embedding dimension and of the fractal dimension of the attractor describing these oscillations. The corresponding power spectrum and the Kolmogorov entropy, which was found to have a constant positive value, confirm the chaotic nature of the oscillations. The influence of external white noise and of the sampling rate used for the evaluation on the obtained results is also examined.

引用

页码：16144 / 16147

页数：4

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